Straits of Mackinac
Encyclopedia
The Straits of Mackinac is the strip of water that connects two of the Great Lakes, Lake Michigan
Lake Michigan
Lake Michigan is one of the five Great Lakes of North America and the only one located entirely within the United States. It is the second largest of the Great Lakes by volume and the third largest by surface area, after Lake Superior and Lake Huron...

 and Lake Huron
Lake Huron
Lake Huron is one of the five Great Lakes of North America. Hydrologically, it comprises the larger portion of Lake Michigan-Huron. It is bounded on the east by the Canadian province of Ontario and on the west by the state of Michigan in the United States...

, and separates the Lower Peninsula of Michigan
Lower Peninsula of Michigan
The Lower Peninsula of Michigan is the southern of the two major landmasses of the U.S. state of Michigan. It is surrounded by water on all sides except its southern border, which it shares with Ohio and Indiana. Geographically, the Lower Peninsula has a recognizable shape that many people...

 from the Upper Peninsula of Michigan
Upper Peninsula of Michigan
The Upper Peninsula of Michigan is the northern of the two major land masses that make up the U.S. state of Michigan. It is commonly referred to as the Upper Peninsula, the U.P., or Upper Michigan. It is also known as the land "above the Bridge" linking the two peninsulas. The peninsula is bounded...

. It is a shipping lane providing passage for raw materials and finished goods, connecting, for instance, the iron mines of Minnesota
Minnesota
Minnesota is a U.S. state located in the Midwestern United States. The twelfth largest state of the U.S., it is the twenty-first most populous, with 5.3 million residents. Minnesota was carved out of the eastern half of the Minnesota Territory and admitted to the Union as the thirty-second state...

 to the steel
Steel
Steel is an alloy that consists mostly of iron and has a carbon content between 0.2% and 2.1% by weight, depending on the grade. Carbon is the most common alloying material for iron, but various other alloying elements are used, such as manganese, chromium, vanadium, and tungsten...

 mills of Gary, Indiana
Gary, Indiana
Gary is a city in Lake County, Indiana, United States. The city is in the southeastern portion of the Chicago metropolitan area and is 25 miles from downtown Chicago. The population is 80,294 at the 2010 census, making it the seventh-largest city in the state. It borders Lake Michigan and is known...

. Before the railroads reached Chicago
Chicago
Chicago is the largest city in the US state of Illinois. With nearly 2.7 million residents, it is the most populous city in the Midwestern United States and the third most populous in the US, after New York City and Los Angeles...

 from the east, most immigrants arrived in the Midwest and Great Plains
Great Plains
The Great Plains are a broad expanse of flat land, much of it covered in prairie, steppe and grassland, which lies west of the Mississippi River and east of the Rocky Mountains in the United States and Canada. This area covers parts of the U.S...

 by ships on the Great Lakes. The straits is five miles (8 km) wide at its narrowest point, where it is spanned by the Mackinac Bridge
Mackinac Bridge
The Mackinac Bridge is a suspension bridge spanning the Straits of Mackinac to connect the non-contiguous Upper and Lower peninsulas of the U.S. state of Michigan. Opened in 1957, the bridge is the third longest in total suspension in the world and the longest suspension bridge between anchorages...

. Before the bridge was built, car ferries transported vehicles across the straits. Today passenger-only ferries carry people to Mackinac Island
Mackinac Island
Mackinac Island is an island and resort area covering in land area, part of the U.S. state of Michigan. It is located in Lake Huron, at the eastern end of the Straits of Mackinac, between the state's Upper and Lower Peninsulas. The island was home to a Native American settlement before European...

, which does not permit cars. Visitors can take their vehicles on a car ferry to Bois Blanc Island
Bois Blanc Island (Michigan)
Bois Blanc Island is coterminous with Bois Blanc Township, Mackinac County in the U.S. state of Michigan. The island covers about and is about 12 miles long, 6 miles wide and has 6 lakes. Bois Blanc is located in Lake Huron southeast of Mackinac Island and almost due north of the city of...

.

Island
Island
An island or isle is any piece of sub-continental land that is surrounded by water. Very small islands such as emergent land features on atolls can be called islets, cays or keys. An island in a river or lake may be called an eyot , or holm...

s in the Straits of Mackinac include the two populated islands, Bois Blanc and Mackinac, and two that are uninhabited: Round
Round Island (Michigan)
Round Island is an uninhabited island in Mackinac County of the U.S. state of Michigan. It is located in the Straits of Mackinac, which connect Lake Michigan and Lake Huron. The Native Americans called the island "Nissawinagong."...

 and St. Helena islands. At 11 miles (18 kilometers) in length, Bois Blanc is the largest island in the Straits.

The straits are shallow and narrow enough to freeze over in the winter. Navigation is ensured for year-round shipping to the Lower Great Lakes by the use of icebreaker
Icebreaker
An icebreaker is a special-purpose ship or boat designed to move and navigate through ice-covered waters. Although the term usually refers to ice-breaking ships, it may also refer to smaller vessels .For a ship to be considered an icebreaker, it requires three traits most...

s.

Geology and history

The Straits are 5 miles (8 km) wide and 120 feet (36.6 m) deep. Hydrologically, they do not connect two separate lakes, but rather are a narrow point defining two lobes of a single Lake Michigan-Huron
Lake Michigan-Huron
Lake Michigan-Huron is geologically the largest of the North American Great Lakes. Traditionally considered to be two separate lakes, Lake Michigan and Lake Huron, it is hydrologically a single body of water connected at the Straits of Mackinac....

.

The Straits were an important Native American
Indigenous peoples of the Americas
The indigenous peoples of the Americas are the pre-Columbian inhabitants of North and South America, their descendants and other ethnic groups who are identified with those peoples. Indigenous peoples are known in Canada as Aboriginal peoples, and in the United States as Native Americans...

 and fur trade
Fur trade
The fur trade is a worldwide industry dealing in the acquisition and sale of animal fur. Since the establishment of world market for in the early modern period furs of boreal, polar and cold temperate mammalian animals have been the most valued...

 route. Located on the southern side of the Straits is the town of Mackinaw City, Michigan
Mackinaw City, Michigan
Mackinaw City is a village in Emmet and Cheboygan counties in the U.S. state of Michigan. At the 2000 census the population was 859. The name "Mackinaw City" is a bit of a misnomer as it is actually a village...

, the site of Fort Michilimackinac
Fort Michilimackinac
Fort Michilimackinac was an 18th century French, and later British, fort and trading post in the Great Lakes of North America. Built around 1715, it was located along the southern shore of the strategic Straits of Mackinac connecting Lake Huron and Lake Michigan, at the northern tip of the lower...

, a reconstructed French fort founded in 1715, and on the northern side is St. Ignace, Michigan
St. Ignace, Michigan
Saint Ignace, usually written as St. Ignace, is a city in the U.S. state of Michigan. As of the 2000 census, the city population was 2,678. It is the county seat of Mackinac County. From the Lower Peninsula, St. Ignace is the gateway to the Upper Peninsula.St...

, site of a French
France
The French Republic , The French Republic , The French Republic , (commonly known as France , is a unitary semi-presidential republic in Western Europe with several overseas territories and islands located on other continents and in the Indian, Pacific, and Atlantic oceans. Metropolitan France...

 Catholic mission to the Indians, founded in 1671. The eastern end of the Straits was controlled by Fort Mackinac
Fort Mackinac
Fort Mackinac is a former American military outpost garrisoned from the late 18th century to the late 19th century near Michilimackinac, Michigan, on Mackinac Island...

 on Mackinac Island, a British colonial and early American military base and fur trade center, founded in 1781.

Straits of Mackinac today

The Straits are patrolled by a detachment of the United States Coast Guard
United States Coast Guard
The United States Coast Guard is a branch of the United States Armed Forces and one of the seven U.S. uniformed services. The Coast Guard is a maritime, military, multi-mission service unique among the military branches for having a maritime law enforcement mission and a federal regulatory agency...

 based at Graham Point, St. Ignace. A shipping channel through the winter ice is maintained by the Coast Guard's Great Lakes icebreaker
Icebreaker
An icebreaker is a special-purpose ship or boat designed to move and navigate through ice-covered waters. Although the term usually refers to ice-breaking ships, it may also refer to smaller vessels .For a ship to be considered an icebreaker, it requires three traits most...

, USCGC Mackinaw
USCGC Mackinaw (WLBB-30)
USCGC Mackinaw is a vessel built as a heavy icebreaker for operations on the North American Great Lakes for the United States Coast Guard. IMO number: 9271054...

, based in Cheboygan, Michigan
Cheboygan, Michigan
Cheboygan is a city in the U.S. state of Michigan. As of the 2000 census, the city population was 5,295. It is the county seat of Cheboygan County....

 near the eastern edge of the Straits. This new vessel went into service during the 2005-06 ice season.

Most of the Straits have been set aside by the U.S. state of Michigan
Michigan
Michigan is a U.S. state located in the Great Lakes Region of the United States of America. The name Michigan is the French form of the Ojibwa word mishigamaa, meaning "large water" or "large lake"....

 as the Straits of Mackinac Shipwreck Preserve
Straits of Mackinac Shipwreck Preserve
The Straits of Mackinac Shipwreck Preserve is a state preserve in and around the Straits of Mackinac. The preserve is divided in two by the Mackinac Bridge. The waters of the preserve include the waters offshore from Mackinaw City and St. Ignace, as well as all or part of the shorelines of Bois...

, a riparian public space dedicated to those personnel who were lost aboard the boats and ships that sank in these dangerous shipping lanes.

Lighthouse
Lighthouse
A lighthouse is a tower, building, or other type of structure designed to emit light from a system of lamps and lenses or, in older times, from a fire, and used as an aid to navigation for maritime pilots at sea or on inland waterways....

s in the Straits of Mackinac include:
  • The McGulpin Point Light
    McGulpin Point Light
    McGulpin Point Light was constructed as a navigational aid through the Straits of Mackinac. The light began operation in 1869, making it one of the oldest surviving lighthouses in the Straits...

    , on McGulpin Point, 3 miles (4.8 km) west of Fort Michilimackinac.
  • The Old Mackinac Point Light, in Mackinaw City, Michigan, which is open to the public.
  • The Round Island Light
    Round Island Light (Michigan)
    The Round Island Light, also known as the "Old Round Island Point Lighthouse" is a lighthouse located on the west shore of Round Island in the shipping lanes of the Straits of Mackinac, which connect Lake Michigan and Lake Huron...

     on Round Island, which is not open to the public but which can be viewed from the Mackinac Island ferry channel.
  • The St. Helena Island Lighthouse
    St. Helena Island Lighthouse
    The buildings of the St. Helena Island Light complex are the sole surviving structures on St. Helena Island, in Mackinac County in the U.S. state of Michigan. The lighthouse on the island's southeastern point was built in 1872-1873 and went into operation in September 1873...

    , which is not open to the public but is visible from a rest area on U.S. Highway 2 at Gros Cap, Michigan west of St. Ignace, Michigan.
  • The Bois Blanc Light
    Bois Blanc Light
    Bois Blanc Light can refer to one of five lighthouses erected on Bois Blanc Island, Michigan, in Lake Huron. Two of the lighthouses are currently standing.-History:...

    , which is not open to the public, on the northern shore of Bois Blanc.

External links

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